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In an effort to characterize the linear elastic-perfect plastic (J2) and Johnson-Cook (JC) Strengthening and Damage material models for an Aluminum target material being struck by a steel penetrator, finite element analysis (FEA) will be used to simulate the residual velocities from ballistic impacts, using various velocities of the penetrator. The object is to define the point at which the J2 material model is no longer accurate and therefore requires the use of the JC material models.
FEA, Finite Element Analysis, Ballistic Impact, Johnson-Cook, Linear Elastic-Perfectly Plastic
Engineering | Mechanical Engineering
James Worth Bagley College of Engineering
Department of Mechanical Engineering
Callahan, Logan J.; Failla, Marella; and Williams, Harrison, "Comparison of Johnson-Cook and Linear Elastic-Perfectly Plastic Material Models for Ballistic Impact Case" (2022). ME 4233/6233 Fundamentals of FEA. 20.